Belt-drive.



E. BOESNER.

BELT DRIVE.

APPLICATION FILED Nov. 9, 1911.

1,053,564. Patented Feb.18,1913.

Znesses EMMA-consulta, or LoNGEvILLE, NEAEMETZ, GERMANY.

BELT-DRIVE.

l Specification of Letters Patent.

Application led November 9,*1911. Serial No. 659,403.

4 Patentea'reb. 18,1913.

To all whom it may concern.'

Be it known that I, EMMAl BoEsNER, a subject of the German Emperor, andresiding at Longeville, near Metz, Germany, have invented certain newand useful Improvements in Belt-Drives, of `which the following is a sciication. y

In and power at high 'speed from a motor or to transfer the same tomachinery, the safety of the operation is often im aired by too muchstraining of the belt. he strain on lthe belt may result from thel factthat the diameter of the driven or driving pulley is limited by adjacentstructures or mechanism, number of revolutions or circumferentialvelocity, and, on the other hand, the width of the beltin manyinstances, bein limited. This disadvantage can be obviate and in factthe construction of the belt drive be made much more Convenient if inthe pair of pulleys either the power transmitting pulley or thereceiving pulley is replaced by a plurality of belt pulleys, which arearranged in a circle around the motor shaft or the main driving shaft ofthe engine respectively, and are connected with each other by means ofbelts ('idlers being employed if necessary or desirable) in such amanner that each of these pulleys' transmits only part of the power toor from the shaft by means of an interposed drivin mechanism, forinstance a frlction wheel rive. .A transmission gearing or shafting canalso be connected to the drive. l

In the drawing: Figure 1 iS a side View, with portions in section,illustrating one form of my invention. Fig. 2 is an edge view thereof.

In the form illustrated in the drawing, the journal frame is not shownin order to show the arrangement more clearly, and owing to lack ofspace the driving pulley bis shown small in comparison with the otherulleys. I Motion and power are transmitted rom thepulley b to the gearwheel a, which is secured to the main shaft of a machine. The ower is.transmitted by means of the belt e, c, and e" to the pulleys d, d, d2,da, d4,

j d", which by means of 'the gear wheels 0,01, lt drives adapted toreceive motionV c2, c, c, and o secured on the same shafts operate thegear wheels g, g1, and g2, arranged, abreast of the gear wheel a andengagmg-the latter.

It will be' seen that the belt extends or is trained about the idler andgeared pulleys, alternately. It will be seen that a progressive loadingof the pulley insuring safety of operation is attained.

Many diiferent forms of execution of the invention are possible.

What I claim as new and desire to secure by Let-ters Patent is:

1. A belt transmission device comprising in combination, a driving and adriven shaft, a pulley for one of said shafts, a pinle'd over the idlerpulleys e, e1, e2, 68,'

ion forthe other shaft, a group. of pulleys l dis osed adjacent saidpinion, some of the Y .p u eys of said group being geared to the lniouand the remainder being free thererom, land a belt trained about thefirst named ulley, and about said group of pulleys, sugstantially asdescribed. v

2. A' belt. transmission device comprising in combination, a drivingshaft anda driven shaft, a pulley forfone of said shafts, a pinion forthe. other-shaft, a plurality of pulleys geared to'said pinion, alurality of idler pulleys, anda belt traine about said first namedpulley and yabout the idler and geared pulleys, substantially asdescribed.

In testimony whereof I affix my signature in presence of two witnesses.

EMMA BOESNER. Witnesses:

FRANZ RoPrLoNE, PETER WEBER.

